head to head
FIFA 99 asks more than Wii Sports Resort, and the gap is reads.

Execution · Competitive PvP
Late-90s arcade football execution with couch-versus prediction and bouncy luck.

Execution · Pure Mechanics
Island-themed collection of twelve motion-controlled sports showcasing the Wii MotionPlus accessory.
FIFA 99 leans Execution (Competitive PvP); Wii Sports Resort leans Execution (Pure Mechanics).
Same score on execution - which means the number cannot separate them. The difference is in what each one asks of you.
FIFA 99
Quick passing and shot timing in arcade-leaning football
Wii Sports Resort
MotionPlus precision in swordplay, archery and bowling
FIFA 99 leans clearly harder on reads.
FIFA 99
Couch opponents can be conditioned and baited
Wii Sports Resort
Local versus duels involve mild feinting
FIFA 99 leans a little harder on variance, though the gap is small.
FIFA 99
Era physics produce regular fluke goals
Wii Sports Resort
Slight physics and CPU pattern randomness
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
FIFA 99
Simple formations and known exploit angles map fast
Wii Sports Resort
Each event has small learnable technique optima
A matching score does not mean a matching test. Two games can both sit at 10 on execution and demand completely different things of you - which is why the reasoning above matters more than the number beside it.